Best Answer

No, it's just an inconsistency on wording. Hero abilities are called skills/spells and abilities equally. Physical/Magic doesn't have anything to do with it.

Spells should only be the consumables that have "spell" in their names.

There are some traits that boost "spells" in that context they are talking about the Hero abilities. So yes, healing improving traits do boost the skills/abilities/spells of the heroes that heal, weavers should add up too.